Symptoms
- Suspension warning light or message on the dashboard
- Ride feels unusually stiff, soft, or uneven
- Possible reduced speed limitation on some vehicles
Likely causes
- CommonFaulty ride height sensorThese sensors tell the system how the suspension is positioned; a fault triggers a warning.
- PossibleFailed suspension actuator or shock (on adaptive suspension)Electronically adjustable shocks or struts can fail and trigger a system-wide warning.
- PossibleWiring or connector issue at a suspension componentA damaged connector, often from road debris or corrosion, can cause a fault code.
What to do
- Note when the warning appeared and whether the ride quality has noticeably changed.
- Avoid heavy loads or aggressive driving until the system is diagnosed, since some vehicles limit function when a fault is present.
- Have the vehicle scanned for suspension-specific fault codes at a shop with the right diagnostic tool.
- Have the specific faulty sensor, actuator, or wiring repaired based on the scan results.
- Confirm the warning clears after the repair and a subsequent drive.
Tools and parts
Ride height sensorSearch: “ride height sensor for [your car model]”
When to call a pro
Adaptive and adjustable suspension systems need a proper scan tool to diagnose accurately, so this is best handled at a shop equipped for your vehicle's system.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.